I was on a high fat high protein diet for a few years prior to 80/10/10 as well. It took months before my skin started to get better, my body was so gunked up with fat that I had a lot of detoxing to do. Did some water fasts that helped, and also eliminated some trigger fruits/veggies from my diet, some of the high histamine ones like tomatoes and strawberries.

Been 80/10/10 for 15 months and skin still isnt perfect but it's the healthiest diet for your body and for avoiding disease so stick it out.